Clapped invoking retrospective CYA because he has visions off a prison cell.
Clapper could mean his wrists “clapped” in handcuffs, and since a Clapper has a “bell”, it does rhyme with “cell”.
Clapper doesn’t want to go down in history as a convicted corrupt official so he might “cell-out” (free get out of jail card) with his testimony against Obie.
I WANT TO SEE AND HEAR THAT.